CVE-2018-20969

Public on 2019-10-18
Modified on 2019-11-07
Description
A flaw was found in GNU patch through version 2.7.6. Strings beginning with a exclamation mark are not blocked by default. When ed receives an exclamation mark-prefixed command line argument, the argument is executed as a shell command. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Severity
Important
CVSS v3 Base Score
7.8
See breakdown

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 patch 2019-10-21 18:01 ALAS2-2019-1317
Amazon Linux 1 patch 2019-10-18 23:22 ALAS-2019-1312

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 7.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD CVSSv2 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C
NVD CVSSv3 7.8 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H